WO2021184730A1

WO2021184730A1 - Lithium battery control system supporting hot swap and control method therefor

Info

Publication number: WO2021184730A1
Application number: PCT/CN2020/119450
Authority: WO
Inventors: 马吉富; 罗剑锋; 包兴发
Original assignee: 卧龙电气驱动集团股份有限公司; 卧龙电气集团浙江灯塔电源有限公司
Priority date: 2020-03-19
Filing date: 2020-09-30
Publication date: 2021-09-23
Also published as: CN111262307A

Abstract

A lithium battery control system that supports hot swap and a control method therefor, which belong to the technical field of batteries. The lithium battery control system comprises a swap control module in cooperation with a battery module, the swap control module comprising a discharge loop connected in parallel with battery cells; a current detection module for detecting the current of the battery module; a voltage detection module for detecting the voltage of the battery module; a power detection module for detecting the power of the battery module; and a control unit connected to the discharge loop, the current detection module, the voltage detection module, and the power detection module. More than one of the battery cells are sequentially connected in series to form the battery module. With regard to the technical problem in the existing technology in which the power must be turned off for operation when replacing a lithium battery, thus it is impossible for a power supply device to continue operation, in the present application, the battery module can be replaced without turning off the power of a power supply device, thereby achieving hot swap without affecting the normal operation of the power supply device.

Description

Lithium battery control system supporting live plugging and unplugging and control method thereof

Technical field

The invention relates to the technical field of batteries, in particular to a lithium battery control system supporting live plugging and unplugging and a control method thereof.

Background technique

Existing communication base stations and other equipment requiring lithium battery power supply mostly use fixed-installed lithium battery packs; these power supply equipment need to be installed, expanded, maintained and other operations in the work project, and then the corresponding power supply lithium battery pack needs to be replaced. Power-off operations are often used in this process, and the power supply needs to be cut off. During the power-off period, it will have a significant impact on normal production and life; for example, the loss of communication signals from communication base stations directly affects the user experience of mobile phones, and other power supply equipment cannot continue. Work, in the event of a major disaster, it will even affect the implementation of rescue and cause loss of personnel and property. If the battery module is directly plugged and unplugged under the condition of uninterrupted power, the lighter ones may cause arcing and fire; the heavy ones will cause the battery pack to short-circuit and burn out.

Summary of the invention

1. The technical problem to be solved by the invention

Aiming at the technical problem that the power supply device cannot continue to work when the lithium battery pack needs to be powered off when replacing the lithium battery pack in the prior art, the present invention provides a lithium battery control system supporting live plugging and unplugging and a control method thereof. It can replace the battery module when the power supply equipment is uninterrupted, and can be plugged and unplugged without affecting the normal operation of the power supply equipment.

2. Technical solution

In order to solve the above-mentioned problems, the technical solution provided by the present invention is as follows:

On the one hand, this application proposes a lithium battery control system that supports live plugging and unplugging, which includes: a plug-in control module that cooperates with a battery module; the plug-in control module includes a discharge circuit connected in parallel with the battery cell; A current detection module for module current; a voltage detection module for detecting battery module voltage; a power detection module for detecting battery module power; and a control connected to the discharge circuit, current detection module, voltage detection module, and power detection module Unit; wherein, the battery module composed of more than one battery in series. The current, voltage and power of the battery module can be adjusted in real time through the plug-in control module matched with the battery module. When the battery module is plugged and unplugged with power, arcing and ignition can be avoided; so that the battery pack can be charged safely and stably Plug and unplug.

Preferably, it further includes a temperature measurement module for detecting the temperature of the battery module; the temperature measurement module is connected to the control unit.

Preferably, the discharge circuit includes a resistor and a switch tube, one end of the resistor is connected to the first end of the switch tube, the other end of the resistor is connected to one end of the battery core, and the second end of the switch tube is connected to the other end of the battery core. The third end of the switch tube is connected with the control unit.

Preferably, the temperature measurement module is attached to the surface of the battery module to detect the temperature value of the battery module to prevent the temperature from exceeding the temperature safety threshold range.

Preferably, the battery plug-in box is further provided with plug-in terminals for connecting the battery module and a battery module fixing bar for fixing the battery module. The battery modules in the battery plug-in box are connected with other battery modules of the battery pack through plug-in terminals. The plug-in terminals ensure reliable and stable connection between the battery module and other battery modules in the battery pack, and prevent the battery module from being inserted in the wrong sequence and causing the battery control system to burn out.

Preferably, it further includes an indication module connected to the control unit. The indicating module is used to indicate the status of the battery module, including but not limited to whether the voltage exceeds the voltage safety threshold range, whether the current exceeds the current safety threshold range, whether the power exceeds the power safety threshold range, and whether the temperature exceeds the temperature safety threshold range; the indicating module It can be an LED indicator, using the extinguishing and lighting states of multiple LED lights to correspond to the corresponding voltage, current, power, and temperature parameter range values to indicate the state of the corresponding parameter.

Preferably, the plug-in terminal includes a plastic socket, a plastic plug, a female pin plate, a plurality of metal pin pins on the female pin plate, a female pin plate, a male pin plate, and a male pin plate The female pin plate and the male pin plate are detachably connected to the plastic socket and the plastic plug, respectively, and the metal pin female head and the corresponding metal pin male head are relative to each other. match.

Preferably, a position sensor is provided on the metal pin female head and the metal pin male head, and the position sensor is electrically connected with the control unit.

Preferably, the plastic socket and the plastic plug are respectively provided with a female through hole and a male through hole corresponding to the size of the metal pin female head and the metal pin male head, and the metal pin female head and the metal pin male head The protruding lengths of the metal pin female head and the metal pin male head are defined by the female head through hole and the male head through hole respectively.

On the other hand, this application proposes a lithium battery control method supporting live plugging and unplugging. According to any one of the above, a lithium battery control system supporting live plugging and unplugging includes:

The control unit receives the output signals of the current detection module, voltage detection module, and power detection module, compares it with the current safety threshold range, voltage safety threshold range, and power safety threshold range preset in the control unit, and judges the current, voltage, and power of the battery module. Whether the power exceeds the corresponding threshold range, so as to control the action of the discharge loop to control the current, voltage and power within the corresponding threshold range.

The temperature measurement module detects the temperature of the battery module and feeds it back to the control unit, compares it with the preset temperature safety threshold range in the control unit, and judges whether the temperature of the battery module exceeds the corresponding threshold range, thereby controlling the action of the discharge loop to control the temperature in the corresponding Within the temperature safety threshold range. The position sensor output signal is sent to the control unit, and the control unit determines whether the metal pin female header and the metal pin male header on the plug-in terminals of the battery module are plugged into place. If plugged into place, the control unit controls the switch to respond Closed, so that the battery module is connected in parallel with other battery modules of the battery pack for supplying power to the load.

3. Beneficial effects

Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

(1) In the technical solution provided by the embodiment of the present invention, the current module detects the current value on the line where the battery module is located and feeds it back to the control unit in real time, and the voltage detection module detects the voltage value at both ends of the battery module and feeds it back to the control unit in real time. The power detection module detects the power of the battery module and feeds it back to the control unit in real time. The control unit is preset with a voltage safety threshold range, a current safety threshold range, and a power safety threshold range; the current detection module detects the current value of the battery module in real time Feedback to the control unit; when the current value of the battery module exceeds the preset current safety threshold range, the control unit controls the action of the discharge loop to adjust the current value of a single cell, thereby adjusting the current of the line where the battery module is located; The detection module detects the voltage value at both ends of the battery module and feeds it back to the control unit in real time. When the voltage value of the battery module exceeds the preset voltage safety threshold range, the control unit controls the battery cell to disconnect; the power detection module detects the power level of the battery module Real-time feedback to the control unit, when the power level of the battery module exceeds the preset power safety threshold range, the control unit controls the action of the discharge loop to adjust the power level of a single cell, thereby adjusting the power level of the battery module. Even if the battery pack is in standby or normally powered on to supply power to the load, the current, voltage and power of the battery module can be adjusted in real time through the plug-in control module matched with the battery module. The phenomenon of arcing and ignition; in order to make the battery pack safe and stable live plugging and unplugging.

(2) In the technical solution provided by the embodiment of the present invention, after the battery module is inserted into the battery case through the plug-in terminal, the lithium battery module is fixed by the battery module fixing bar to prevent it from falling off. Through the corresponding control method, when the power is operated, ensure that the plug-in terminal is reliable, and no arc will be generated when the power is turned on; plug it in to ensure that it can be discharged. When the current exceeds the current safety threshold range, it stops, such as when it exceeds the current safety threshold range of 25A. Limit current to prevent arcing and electric spark.

Description of the drawings

FIG. 1 is a schematic diagram of the principle of a battery pack circuit provided by an embodiment of the present invention;

2 is a schematic diagram of the principle of a lithium battery control system supporting live plugging and unplugging provided by an embodiment of the present invention;

FIG. 3 is a front disassembly diagram of the quick plug-in terminal of the lithium battery according to this embodiment;

4 is a disassembled diagram of the left side three-dimensional structure of the lithium battery quick plug-in terminal according to this embodiment;

5 is a disassembled diagram of the right side three-dimensional structure of the lithium battery quick plug-in terminal according to this embodiment;

6 is a schematic diagram of the assembly structure of the lithium battery quick plug-in terminal according to this embodiment;

7 is a schematic diagram of the plug-in state of the quick plug-in terminal of the lithium battery according to this embodiment;

Fig. 8 is a schematic structural diagram of a battery case provided by an embodiment of the present invention.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

The application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for ease of description, only the parts related to the invention are shown in the drawings. The terms first, second, etc. in the present invention are provided for the convenience of describing the technical solution of the present invention, and do not have a specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present invention. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present application will be described in detail with reference to the drawings and in conjunction with the embodiments.

Example 1

This embodiment proposes a lithium battery control system that supports live plugging and unplugging, which includes: a plug-in control module that cooperates with the battery module 112; the plug-in control module includes a discharge circuit connected in parallel with the battery cell 111; and is used for battery detection. A current detection module for module current; a voltage detection module for detecting battery module voltage; a power detection module for detecting battery module power; and a control connected to the discharge circuit, current detection module, voltage detection module, and power detection module Unit; wherein, one or more of the battery cells 111 are sequentially connected in series to form the battery module. The two ends of more than one battery module 112 are connected in parallel to form the battery pack 110.

As shown in Figure 2, the current module detects the current value on the line where the battery module 112 is located and feeds it back to the control unit in real time, the voltage detection module detects the voltage value across the battery module 112 and feeds it back to the control unit in real time, and the power detection module detects the battery. The power level of the module 112 is fed back to the control unit in real time. The control unit is preset with a voltage safety threshold range, a current safety threshold range, and a power safety threshold range; the current value of the battery module 112 detected by the current detection module is fed back to the control in real time Unit; when the current value of the battery module 1 exceeds the preset current safety threshold range, the control unit controls the discharge loop action to adjust the current value of a single cell 111, thereby adjusting the current of the line where the battery module 112 is located; voltage The detection module detects that the voltage value across the battery module 112 is fed back to the control unit in real time. When the voltage value of the battery module 112 exceeds the preset voltage safety threshold range, the control unit controls the battery cell 111 to disconnect; the power detection module detects the battery module The power level of 112 is fed back to the control unit in real time. When the power level of the battery module 112 exceeds the preset power safety threshold range, the control unit controls the action of the discharge loop to adjust the power level of a single cell 111, thereby adjusting the power level of the battery module 112. Power size. Even if the battery pack 110 is in a standby state or is normally energized to supply power to the load 211, the current, voltage and power of the battery module 112 can be adjusted in real time through the plug-in control module matched with the battery module 112, and the battery module can be plugged and unplugged with power. At 112 hours, the phenomenon of arcing and ignition can be avoided; so that the battery pack 110 can be plugged and unplugged safely and stably.

In a specific application, as shown in FIG. 1, 15 battery cells 111 are connected in series to form a battery module 112, and more than one battery modules 112 are connected in parallel to form a battery pack 110; more than one battery pack 110 provides power to the load 211. The battery control system is connected to the plug-in terminals through a wire harness, and monitors the battery module 112. After the battery module 112 is inserted into the battery case through the plug-in terminal, the battery module 112 is fixed by the battery module fixing bar to prevent it from falling off. Through the corresponding control method, when the power is operated, ensure that the plug-in terminal is reliable, and no arc will be generated when the power is turned on; plug it in to ensure that it can be discharged. When the current exceeds the current safety threshold range, it stops, such as when it exceeds the current safety threshold range of 25A. Limit current to prevent arcing and electric spark.

When the communication power system is installed, expanded, maintained, and replaced the battery pack 110, the technical solution of the embodiment of the present invention can be used to maintain continuous power supply during this process, avoid the disappearance of communication signals, and improve the experience of mobile phone users. In the event of a major disaster, ensure the safe and reliable operation of the power supply system to avoid personnel and property losses.

As shown in FIG. 1, the battery plug-in box 311 serves as a fixed case for the battery module 112, and the battery module 112 is inserted into the battery plug-in box 311 through plug-in terminals.

As shown in Figure 2, the battery control system monitors the power-on sequence and insertion position of the battery by plugging and unplugging the terminals, judging whether the system is properly plugged in, and then performing power-on management to avoid the phenomenon of power-on arcing. The battery control system is connected to the plug-in terminal through a wire harness to monitor the lithium battery.

A lithium battery control system supporting live plugging and unplugging in this embodiment belongs to the technical field of lithium batteries used in the communication backup power industry. This embodiment supports online replacement of the battery module 112. The battery module 112 is inserted into the battery box 311 through a customized plug-in terminal (such as the plug-in terminal described in Example 7), and the position of the plug-in terminal (hot plug terminal) is judged Different lengths of the inner pins are customized, and the long pin connection position of the terminal is judged to determine whether it is connected reliably) to ensure the continuous and stable power supply of the battery system to the power system. Specifically, the plug-in terminal includes a plurality of the metal pin male heads 4, the length of the metal pin male head 4 is designed to be different, and one of the metal pin male heads 4 is selected as the longest length Marked as the long metal pin male head, the length of the other metal pin male heads 4 is shorter than the length of the long metal pin male head. In order to ensure good contact with the metal pin female head 6, the metal pin male head 4 are expansion heads; connected to the relay at the bottom of the metal pin female head 6 matching the long metal pin male head, the relay switch button is arranged at the bottom of the metal pin female head 6, the relay output and control When the plug-in terminal connected with the battery module 112 is inserted into the battery plug-in box 311, the long metal pin male head is inserted into the matching metal pin female head 6. When plugged into place, the long metal pin The end of the metal pin male head touches or squeezes the relay switch button at the bottom of the metal pin female head 6, and the relay output terminal sends a signal to the control unit. After the control unit receives the signal, it determines that the long metal pin male head has been Inserted in place, it means that other metal pin male headers 4 with a length shorter than the long metal pin male header have also been inserted in place, indicating that the electrical signal of the inserted battery module 112 is in good contact; the control unit controls the opening and the inserted battery module The switch (which may be a switch tube, such as IGBT or MOSFET) on the loop 112 connected in parallel connects the battery module 112 to the battery pack 110 and is connected in parallel with the battery pack 110. The newly inserted battery module 112 is safely and reliably plugged in, and the power is supplied after the reliable contact is ensured, so that dangerous situations such as arcing and ignition will not occur. Realize the plugging and unplugging of the battery module 112 when the battery pack 110 is charged. When a certain battery module 112 is ready to be unplugged, the control unit controls the switch on the loop parallel to the pre-unplugged battery module 112 to turn off, and the pre-unplugged battery module 112 is about to be turned off. , Maintain the electrical connection and disconnection with the battery pack 110, and then unplug the pre-unplugged battery module 112 from the battery pack 110. Ensure the safety of plugging and unplugging, and there will be no dangerous situations such as arcing and fire.

Example 2

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in Embodiment 1, the following improvements can be made: It also includes a temperature measurement module for detecting the temperature of the battery module 112; the temperature measurement module Connect with the control unit. The temperature measurement module detects the temperature of the battery module 112 and feeds it back to the control unit in real time. The control unit is preset with a temperature safety threshold range of the battery module 112. If the temperature exceeds the temperature safety threshold range, the battery module 112 If the temperature is too high, the control unit controls the battery module 112 to be disconnected from the battery pack 110 to prevent the battery module 112 from being burned out due to the high temperature.

Example 3

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in

Embodiment

1 or 2, the following improvements can be made: the discharge circuit includes a resistor and a switch tube, and one end of the resistor is connected to the switch tube. The first end is connected, the other end of the resistor is connected to one end of the cell 111, the second end of the switch tube is connected to the other end of the cell 111, and the third end of the switch tube is connected to the control unit.

The switch can be a transistor or a MOSFET. When the switch is a transistor, the first end of the switch is the collector, the second end is the emitter, and the third end is the base; when the switch is the MOSFET, the switch The first end of the tube is the drain, the second end is the source, and the third end is the gate. The control unit controls the switching off of the switch tube to determine whether the two ends of the battery cell 111 are connected in parallel, thereby changing the current on the battery cell 111, thereby changing the current on the line where the battery module 112 is located, and limiting the current size at the moment of live plugging and unplugging. Prevent sparking or arcing.

Example 4

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in any one of the embodiments 1-3, the following improvements can be made: the temperature measurement module is attached to the surface of the battery module 112 . It is used to detect the temperature value of the battery module 112 to prevent the temperature from being too high and exceeding the temperature safety threshold range.

Example 5

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in any one of the embodiments 1-4, the following improvements can be made: a battery plug-in box 311 is further included, and the battery plug-in box 311 is A plug-in terminal for connecting the battery module 112 and a battery module fixing bar for fixing the battery module 112 are provided.

The battery module 112 in the battery plug box 311 is connected to the other battery modules 112 of the battery pack 110 through plug-in terminals. The plug-in terminals ensure a reliable and stable connection between the battery module 112 and the other battery modules 112 of the battery pack 110, and prevent the battery module 112 from being inserted in a sequence error, causing the battery control system to burn out.

The battery plug-in box 311 serves as a case where the battery module 112 is fixed to form the battery pack 110, and the battery module 112 is inserted into the battery plug-in box 311 through plug-in terminals. The battery plug-in box 311, the battery module 112, and also include a communication module (using Bluetooth, wireless network, etc.), the plug-in terminal has a communication port for connecting the data storage module and the battery control system for communication For communication between the storage board and the battery control system, the battery module 112 fixing strip is used to fix the battery module 112 in the battery plug-in box 311 to prevent the wiring harness connected to the battery module 112 from being damaged.

Example 6

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in any one of the embodiments 1-5, the following improvements can be made: an indication module is further included, and the indication module is connected to the control unit.

The indication module is used to indicate the status of the battery module 112, including but not limited to whether the voltage exceeds the voltage safety threshold range, whether the current exceeds the current safety threshold range, whether the power exceeds the power safety threshold range, and whether the temperature exceeds the temperature safety threshold range; The module can be an LED indicator, using the off and on states of multiple LED lights to correspond to the corresponding voltage, current, power, and temperature parameter range values to indicate the state of the corresponding parameter.

Example 7

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in any one of the embodiments 1-5, the following improvements can be made: a lithium battery fast Plug-in terminals, including a plastic socket 1, a plastic plug 2, a female pin board 5, a number of metal pin female pins 6 on the female pin board 5, a male pin board 3, and a male pin board 3 Several metal pin male headers 4 on the needle plate 3, the female pin plate 5 and the male pin plate 3 are detachably connected to the plastic socket 1 and the plastic plug 2, respectively, and the metal pin female head 6 Matching with the corresponding metal pin male header 4, the metal pin male header 4 includes a positive electrode male header 42, a negative electrode male header 41, a temperature monitoring male header 43, a communication male header 44, and a voltage monitoring male header 45; The length of the negative male connector 41 is greater than that of the positive male connector 42, the length of the positive male connector 42 is longer than the temperature monitoring male connector 43, and the lengths of the temperature monitoring male connector 43, the communication male connector 44 and the voltage monitoring male connector 45 are equal. Correspondingly, the metal pin female connector 6 is provided with a positive female connector 62, a negative female connector 61, a temperature monitoring female connector 63, a communication female connector 64, and a voltage monitoring female connector 65.

Wherein, the female pin plate 5 and the male pin plate 3 are detachably connected to the plastic socket 1 and the plastic plug 2 through an inverted structure. The inverted buckle structure is formed by the mating of the female pin board buckle 52 on the female pin board 5 and the socket card slot 12, or the male pin board buckle 32 on the male pin board 3 and The plug slot 22 is formed in cooperation.

Wherein, the plastic socket 1 and the plastic plug 2 are respectively provided with a metal pin female 6 and a metal pin male 4 with a female through hole 13 and a male through hole 23, and the metal pin female 6 and the metal pin male head 4 define the protruding length of the metal pin female head 6 and the metal pin male head 4 through the female through hole 13 and the male through hole 23, respectively.

Wherein, the plastic plug 2 is provided with an upper frame 24 and a lower frame 25, and the plastic socket 1 is provided with an upper protruding structure 14 and a lower protruding structure 15 that cooperate with the upper frame 24 and the lower frame 25, so The upper frame 24 includes a positive male connector 42, a negative male connector 41, a temperature monitoring male connector 43, and a male through hole 23 corresponding to the communication male connector 24. The lower frame 25 includes a male through hole 23 corresponding to the voltage monitoring male connector 45. Holes 23, the female through holes 13 are correspondingly provided in the upper protruding structure 14 and the lower protruding structure 15.

Wherein, the diameters of the positive electrode male connector 42 and the negative electrode male connector 41 are larger than the temperature monitoring male connector 43, and the temperature monitoring male connector 43, the communication male connector 44 and the voltage monitoring male connector 45 have the same diameter. The larger the diameter of the positive male connector 42 and the negative male connector 41, the greater the current that can flow. In addition, the large-diameter negative male connector 41 has the longest length. When it is in contact with the corresponding negative female connector 61, the rest can be accurately positioned. The insertion positions of the metal pin male 4 and the metal pin female 6 greatly enhance the insertion efficiency.

Wherein, the negative electrode male head 41 is arranged between a plurality of positive electrode male heads 42.

Wherein, the plastic plug 2 is provided with a guide protrusion structure 21, the plastic socket 1 is provided with a guide groove structure 11, and the guide protrusion structure 21 cooperates with the guide groove structure 11 for guiding and positioning the metal pin The plugging position of the male connector 4 and the metal pin female connector 6.

Wherein, the metal pin female 6 and the corresponding metal pin male 4 on the female pin board 5 and the male pin board 3 are respectively provided with a female digital ID 51 and a male digital ID 41. It is used to identify the corresponding positions of the metal pin female head 6 and the metal pin male head 4.

Wherein, the plastic socket 1 and the plastic plug 2 are separately provided with direction marks, and the direction marks include the socket direction mark 16 and the plug direction mark 26 to identify the connection direction of the plastic socket 1 and the plastic plug 2.

The tail of the metal pin female 6 has a female half-slot structure 66, and the metal pin male 4 has a male half-slot structure 46, which is convenient for connecting wire welding.

When installing the structure, first install the metal pin female 6 and the metal pin male 4 on the female pin plate 5 and the male pin plate 3 respectively, and then connect the female pin plate 5 and the male pin plate through the inverted structure. The male pin board 3 is installed on the plastic socket 1 and the plastic plug 2 so that the metal pin female 6 and the metal pin male 4 are in the corresponding female through holes 13 and male through holes 23 respectively.

When in use, adjust the direction of the plastic socket 1 and the plastic plug 2 according to the plug direction indicator 26 and the socket direction indicator 16, and connect the guide protrusion structure 21 with the guide groove structure 11, and then align the negative male header 41 with the negative female After the header 61 is inserted, insert it directly, then the corresponding positive male header 42 and positive female header 62, temperature monitoring male header 43 and temperature monitoring female header 63, communication male header 44 and communication female header 64, voltage monitoring male header 45 and voltage The monitoring female heads 65 are all in alignment. It saves terminal operation time and greatly improves the efficiency of installation, maintenance or replacement.

Example 8

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solutions described in any one of the embodiments 1-7, the following improvements can be made: the metal pin female head and the metal pin male A position sensor is arranged on the head, and the position sensor is electrically connected with the control unit.

The position sensor is a proximity switch, or a Hall sensor, etc. The position sensor detects whether the metal pin male end of the plug-in terminal and the metal pin female end are inserted in place, so as to facilitate the control unit to control the corresponding switch The action is to power on the battery module 112 to prevent poor contact due to improper insertion of the battery module 112 and the battery pack 110, and sudden power-on causing damage to the battery module 112.

The battery control system uses the position sensor of the plug-in terminal to detect whether each metal pin male head and the metal pin female head are inserted in place, and the corresponding insertion sequence; to monitor the power-on sequence of the battery module 112 and Insertion position, after judging whether the battery module 112 is normally inserted into the battery plug-in box 311, the power-on management is performed to avoid the phenomenon of power-on arcing.

Example 9

This embodiment proposes a lithium battery control system that supports live plugging and unplugging. According to the technical solution described in any one of the embodiments 1-8, the following improvements can be made: the plastic socket 1 and the plastic plug 2 are respectively provided with metal The female through holes 13 and the male through holes 23 corresponding to the size of the pin female 6 and the metal pin male 4, the metal pin female 6 and the metal pin male 4 respectively pass through the female through holes 13 and The male through hole 23 defines the protruding length of the metal pin female 6 and the metal pin male 4.

Example 10

This embodiment proposes a lithium battery control method supporting live plugging and unplugging. The lithium battery control system supporting live plugging and unplugging according to any one of claims 1-9 includes:

The control unit receives the output signals of the current detection module, the voltage detection module, and the power detection module, compares it with the current safety threshold range, voltage safety threshold range, and power safety threshold range preset in the control unit, and judges the current and voltage of the battery module 112 And whether the power exceeds the corresponding threshold range, so as to control the action of the discharge loop to control the current, voltage and power within the corresponding threshold range.

The temperature measurement module detects the temperature of the battery module 112 and feeds it back to the control unit, compares it with the temperature safety threshold range preset in the control unit, and judges whether the temperature of the battery module 112 exceeds the corresponding threshold range, thereby controlling the action of the discharge loop to control the temperature Within the corresponding temperature safety threshold.

The position sensor output signal is sent to the control unit, and the control unit judges whether the metal pin female header and the metal pin male header on the plug-in terminal of the battery module 112 are plugged into place. If plugged into place, the control unit controls the switch The response is closed, so that the battery module 112 is connected in parallel with the other battery modules 112 of the battery pack 110 for supplying power to the load 211.

The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover the above technical features or technical solutions without departing from the concept of the application. Other technical solutions formed by arbitrarily combining the equivalent features. For example, the above-mentioned features and the technical features disclosed in this application (but not limited to) with similar functions are mutually replaced to form a technical solution.

Claims

A lithium battery control system supporting live plugging and unplugging, which is characterized in that it includes: a plug-in control module matched with a battery module; the plug-in control module includes a discharge circuit connected in parallel with a battery cell; A current detection module; a voltage detection module for detecting the voltage of the battery module; a power detection module for detecting the power of the battery module; and a control unit connected to the discharge circuit, the current detection module, the voltage detection module, and the power detection module;

Wherein, the battery module is composed of one or more battery cells connected in series.
The lithium battery control system that supports live plugging and unplugging according to claim 1, further comprising a temperature measurement module for detecting the temperature of the battery module; the temperature measurement module is connected to the control unit.
The lithium battery control system that supports live plugging and unplugging according to claim 1, wherein the discharge circuit includes a resistor and a switch tube, one end of the resistor is connected to the first end of the switch tube, and the other end of the resistor It is connected to one end of the battery core, the second end of the switch tube is connected to the other end of the battery core, and the third end of the switch tube is connected to the control unit.
The lithium battery control system that supports live plugging and unplugging according to claim 2, wherein the temperature measurement module is attached to the surface of the battery module.
The lithium battery control system that supports live plugging and unplugging according to claim 2, further comprising a battery plug-in box, and plug-in terminals for connecting the battery module and for fixing the battery are provided in the battery plug-in box. The battery module fixing strip of the module.
The lithium battery control system supporting live plugging and unplugging according to claim 2, characterized in that it further comprises an indication module connected to the control unit.
The lithium battery control system that supports live plugging and unplugging according to claim 5, wherein the plug-in terminal comprises a plastic socket, a plastic plug, a female pin board, and a plug on the female pin board. Several metal pin females, male pin plates and several metal pin males arranged on the male pin plates, the female pin plates and the male pin plates are respectively detachably connected to the plastic socket and On the plastic plug, the metal pin female head matches the corresponding metal pin male head.
The lithium battery control system that supports live plugging and unplugging according to claim 7, wherein the metal pin female head and the metal pin male head are provided with a position sensor, and the position sensor is connected to the control The unit is electrically connected.
The lithium battery control system that supports live plugging and unplugging according to claim 7, wherein the plastic socket and the plastic plug are respectively provided with a metal pin female header and a metal pin male header with corresponding sizes. Through holes and male through holes, the metal pin female and the metal pin male respectively define the protruding length of the metal pin female and the metal pin male through the female through hole and the male through hole.
A lithium battery control method supporting live plugging and unplugging, wherein the lithium battery control system supporting live plugging and unplugging according to any one of claims 1-9 includes:

The control unit receives the output signals of the current detection module, voltage detection module, and power detection module, compares it with the preset current safety threshold range, voltage safety threshold range, and power safety threshold range in the control unit, and judges the current, voltage, and power of the battery module. Whether the power exceeds the corresponding threshold range, so as to control the action of the discharge loop to control the current, voltage and power within the corresponding threshold range.